My favorite three:

Yancai Uaezdaettae

good ammo, good ranged damage, good charge, good morale, good armor, good speed and CANTABRIAN CIRCLE all in one awesome unit.


Medjinikos

Best archer-spearman in the game, easily accessible for the Sweboz player, will obliterate almost any barbarian army.

Cidainh

Often disdained and misused, but actually the most devastating force in the game. A battle-winning, game-winning, heart-winning force of fun and awesomeness.